TL594
ELECTRICAL CHARACTERISTICS
(V
CC
= 15 V, C
T
= 0.01
mF,
R
T
= 12 kW, unless otherwise noted.)
For typical values T
A
= 25°C, for min/max values T
A
is the operating ambient temperature range that applies, unless otherwise noted.
Characteristics
PWM COMPARATOR SECTION
(Test Circuit Figure 11)
Input Threshold Voltage (Zero Duty Cycle)
Input Sink Current (V
Pin 3
= 0.7 V)
DEADTIME CONTROL SECTION
(Test Circuit Figure 11)
Input Bias Current (Pin 4) (V
Pin 4
= 0 V to 5.25 V)
Maximum Duty Cycle, Each Output, Push−Pull Mode
(V
Pin 4
= 0 V, C
T
= 0.01
mF,
R
T
= 12 kW)
(V
Pin 4
= 0 V, C
T
= 0.001
mF,
R
T
= 30 kW)
Input Threshold Voltage (Pin 4)
(Zero Duty Cycle)
(Maximum Duty Cycle)
OSCILLATOR SECTION
Frequency
(C
T
= 0.001
mF,
R
T
= 30 kW)
(C
T
= 0.01
mF,
R
T
= 12 kW, T
A
= 25°C)
(C
T
= 0.01
mF,
R
T
= 12 kW, T
A
= T
low
to T
high
)
Standard Deviation of Frequency* (C
T
= 0.001
mF,
R
T
= 30 kW)
Frequency Change with Voltage (V
CC
= 7.0 V to 40 V, T
A
= 25°C)
Frequency Change with Temperature
(DT
A
= T
low
to T
high
, C
T
= 0.01
mF,
R
T
= 12 kW)
UNDERVOLTAGE LOCKOUT SECTION
Turn−On Threshold (V
CC
Increasing, I
ref
= 1.0 mA)
T
A
= 25°C
T
A
= T
low
to T
high
Hysteresis
TL594C,I
TL594M
TOTAL DEVICE
Standby Supply Current (Pin 6 at V
ref
, All other inputs and outputs open)
(V
CC
= 15 V)
(V
CC
= 40 V)
Average Supply Current (V
Pin 4
= 2.0 V, C
T
= 0.01
mF,
R
T
= 12 kW,
V
CC
= 15 V, See Figure 11)
I
CC
−
−
−
8.0
8.0
11
15
18
mA
−
mA
V
th
4.0
3.5
V
H
100
50
150
150
300
300
5.2
−
6.0
6.5
mV
V
f
osc
−
9.2
9.0
σf
osc
Df
osc
(DV)
Df
osc
(DT)
−
−
−
40
10
−
1.5
0.2
4.0
−
10.8
12
−
1.0
−
%
%
%
kHz
I
IB (DT)
DC
max
45
−
V
TH
−
0
2.8
−
3.3
−
48
45
50
−
V
−
−2.0
−10
mA
%
V
TH
I
I−
−
0.3
3.6
0.7
4.5
−
V
mA
Symbol
Min
Typ
Max
Unit
*Standard deviation is a measure of the statistical distribution about the mean as derived from the formula,
σ
N
Σ
(X
n
− X)
2
n=1
N−1
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